"From 4 blocks to 6 blocks. The sound quality has evolved and the power of the speakers is fully demonstrated."

[Diffusion Effect Enhancement Plan 2]
In addition to the diffusion effect on the back of the door, sound quality is further enhanced by looking around the entire inside of the door and increasing the amount of diffusion material in the right places.
In this plan, the interior of the door will be increased from 4 blocks to 6 blocks to achieve sound diffusion over a wider area and maximize the capabilities of the speakers.
By expanding the area, the sound is spread more evenly, producing clear and dynamic sound with a sense of speed.

Also, by performing this increase and diffusion effect together with deadening work, you can obtain effects that exceed the price. By doing the work all at once, you can efficiently improve sound quality and obtain higher acoustic effects.